Water behavior of poly(acrylic acid)/poly(acrylonitrile) semi-interpenetrating polymer network hydrogels

被引：4
|
作者：
Kim, SJ [1 ]
Lee, KJ [1 ]
Lee, SM [1 ]
Kim, IY [1 ]
Kim, SI [1 ]
机构：
[1] Hanyang Univ, Dept Biomed Engn, Seoul 133791, South Korea
来源：
HIGH PERFORMANCE POLYMERS | 2004年 / 16卷 / 04期
关键词：
hydrogel; poly(acrylic acid); poly(acrylonitrile); semi-IPN; swelling;
D O I：
10.1177/0954008304042473
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Semi-interpenetrating polymer network (semi-IPN) hydrogels, composed of poly(acrylic acid) (PAAc) and poly(acrylonitrile) (PAN), were prepared using UV irradiation. The characteristics of semi-IPN hydrogels were investigated by swelling experiments, and differential scanning calorimetry (DSC). The semi-IPN hydrogels exhibited swelling ratio in the range of 24.1-81.8% at 35degreesC. The swelling ratio of the semi-IPN hydrogels depended on pH and temperature. DSC was used for the quantitative determination of the amounts of free and bound water. The free water contents in the semi-IPN hydrogel AN21, AN31, and AN41 were 1.2, 2.4, and 11.3% in pure water, respectively. Activation energies of semi-IPN hydrogels also were calculated.
引用
收藏
页码：625 / 635
页数：11
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